Question

what is reflex arc ? why is it efficient

Answer 1

The pathway taken by nerve impulse in a reflex action is called the reflex arc Reflex arcs have evolved in animals because the thinking process of brain is not fast enough. However, even after complex neuron networks have come into existence, reflex are continue to be more efficient for quick responses.

Answer 2

reflex arc is neutral pathway that mediates a reflex action .the pathway of reflex arc : Receptor _sensory neuron _ ralay neuron _ motor neuron _ effector .Hence reflex arcs have been evolved as efficient way of functionality in the absence of the true through processes